Sash and reglazing method therefor



Sept. 6, 1955 P. H. KUYPER SASH AND REGLAZING METHOD THEREFOR FiledApril 2, 1954 BY gm; 972m 94% ATTORNEYS.

nited States Patent 0 SASH AND REGLAZING METHOD THEREFOR Peter-H.Kuyp'er, Pella, Iowa, assignor to RolscreenCom- 'pany,'Pella, Iowa, acorporation ofIowa 7 Application April.'2, v1954, Serial No. 420,716

'2 Claims. (Cl. 2'0'56.4)

This invention relatesto a window sash construction, and to theutilization of such a construction in a method of reglazing.

The present invention contemplates improvements in window'sashconstructions of the type wherein the glass is set in a rabbet andembedded therein by means of a suitable sealing compound. Theinstallation of window glass in sash constructions provided with-arabbet for retaining the glass in position avoids the shortcominginherent'in conventional sealing'methods wherein the'glass is set in asash with agl-azing compound applied in a peripheral bead on the face-ofthe sash. It has been my experience that conventional glazing methods ofthe aforementioned type have been unsatisfactory because of'the failureof commercially available putties and glazing compounds tomaintain-a'water tight seal over long periods of time.

Although the practice o'f setting glass in a rabbet to achieve animproved seal has been attempted before, the problem-of glassreplacement and reglazing in the event of breakageor other damage 'is adifiicult one,'and necessarily requires disassembly of the'sa'sh. Ipropose by the present inventionto employ a lon'g'itudinal groove orker'f in'the face oft-he sash,whereby it'will bepossible-tobreak outtheretaining edge-portions of the sash with a chiselor putty knife,'replace'the glass with anew pane and fresh sealing compound, and thentack or otherwise secure the glassstop 'or'retaining sa'sh portion backin its former place.

It is a'pri1n-ary:object of the present invention, therefore, -toprovide a window sash construction employing a frame having a rabbetformed'about its inner periphery, and having a longitudinal groove orkerf in.the face of the frame extending in depth toward the rabbet,whereby deepening ofthe groove to: intersect with the rabbet effectsremoval of the glass restraining portion of the frame, thereby;permitting replacement of the glass and sealing compound and subsequentreturn of the removed "frame portion toits original position to againserve as ;a restrainingmeans for the glass.

It is another object of the present.inventionto-provide a removableglass stop which is initially an integrally formed portion of the windowframe and of sufficient strength to suitably secure a glass pane ofsubstantial mass in permanent fixed relation within the frame until suchtime as replacement of the glass pane may be desired.

It is a further object of this invention to provide a method ofreglazing in which portions of the window frame constituting glassretaining means are broken out, new glass is installed within the frameand embedded in fresh sealing compound, and the restraining means arereturned to their original place and fixedly secured in position.

With these and other objects in view, my invention consists in theconstruction, arrangement and combination of the various parts of mysash, and in the performance of my reglazing method therewith, wherebythe objects contemplated are obtained as hereinafter more fully setforth, pointed out in my claims andillustrated in the accompanyingdrawing wherein:

Fig. 1 is a perspective view showing asashconstruction provided withgrooves .in accordance with the present invention.

Fig. 2 is a cross sectional view taken in-the direction 2-2 on Fig. 1,showing the cooperativerelation between the glass receiving rabbet andthe adjacent cooperating groove.

Figs. 3 to 6, inclusive, are other sectional views similar to Fig. 2,showing the sequence of steps in performing the methodof reglazing ofthe present invention.

Referring to the drawing, I have used the numeral 10 to designate awindow sash construction, generally.

The window sash comprises a pluralityof non-metallic, conventionallywooden, side elements 12. Theside elements 12 are suitably notched andgrooved as at 14 (see Fig. -1) for interconnection to form a generally'rectangular window frame defining an opening therethrough. A pane ofglass, or other suitable translucent material, is indicated at 16.

The side elements '12 of the frame constructionare each provided with arabbet 18 extending'longitudinally along the inner peripheral edgethereof, as clearly shown in Fig. 2. During assembly of the-sideelementsto provide an integral rectangular frame, the edges of the pane of glass16 are suitably positioned within the rabbets 1-8 and embedded thereinwith a sealing material 20.

In general, a material like putty or caulking compound is placed in therabbet 18 to permit thepane of glass 16 to be securely pressed intoplace. The exact'nature of the sealing compound is not an importantfeature of this invention, but it is preferably a type of material whichis "resistant to weathering, remains plastic indefinitely, and maintainsa permanent water tight seal. As 'best seen'in' Fig. '2, the front facesof each of the side elements '12 are provided with a longitudinallyextending groove or kerf 22. The grooves 22- are of relatively shallowdepth and extend'into the frame in a direction substantiallyperpendicular to the plane of the, rabbet 18. Ea'c'h groove 22fis sopositioned below the surface ofthe'top edge of the "respective sideelement 12 that a deepening "thereof toward the rabbet 18 will serve toeifectian intersection therewith. I

As clearly seen in Fig. 2 of the drawing, the grooves 22 are veryshallow, in depth ascomparedgto the rabbets 18. It is "animportantfeature of the present invention to provide a substantialthickness of window, frame material betweenthe grooves and rabbets inorder to provide an integrally formed glass stop of sufficient strengthto satisfactorily retain the substantial mass of a .pane of glass inpermanent fixed relation within the window frame. This is of particularimportance in the construction of aframe intended for relativelypermanent installation, wherein the need for glass replacement may notarise until long after-the'initial assembly of the-window. It isessential, therefore, thatthe glass stop provi'de'd'by the presentinvention be more than a mere separate strip of material which may beremoved and replaced at will. It is a novel feature of this inventionthat the glass stop be formed integrally with the window frame.Preferably, the grooves 22 terminate substantially short of intersectionwith the rabbets so as to provide an integral frame thicknesstherebetween which is of several times greater extent than the depth ofthe groove.

In performing the method of the persent invention the steps as indicatedin Figs. 3 to 6 are required. Assuming that a window construction asshown in Fig. 1 has been suitably installed in a wall or the like, andthat it has become necessary because of breakage or other reasons toreplace the glass pane, the following sequence is performed. First, asshown in Fig. 3, a suitable tool, such I) as a chisel, putty knife, orother instrument having a sharp edge, is inserted in the groove 22. Uponapplication of necessary force to drive the tool toward the rabbet 18,breakage or cutting will be effected to separate the glass restrainingportion of the frame element 12.

As seen in Fig. 4, the cutting or breaking will generally occur along anirregular breakage line such as that indicated at 24. In this way, therestraining portion of the frame element 12 is separately defined as aremovable glass stop 26. The glass stop 26 is then lifted away to permitremoval of the glass pane 16, or fragments thereof, as well as theresidue of the old putty or sealing compound 20.

As seen in Fig. 5, a new pane of glass 16a is next inserted within theremaining side and bottom portion of the rabbet 18, and embeddedthereagainst in fresh putty or sealing compound 20a.

Finally, as seen in Fig. 6, the glass stop 26 is returned to its formerposition and fixedly secured in place by means of tacks or nails 28. Inperforming the step of Fig. 3, the glass stop will generally break outquite easily, even though the line of cleavage may be irregular. Inperforming the replacement step of Fig. 6, the stop 26 may be readilyfitted along the complementary break lines of the frame side element 12,and irregularities of the breakage lines 24 will not in any way renderthe replacement step difficult.

The steps shown in Figs. 3 to 6 may be performed quickly and withoutdifficulty. Inasmuch as the putties and glazing compounds presentlyavailable are frequently difficult to remove during glass replacement,because of age-hardening, the operation of breaking out the glass stop26, as shown in Fig, 4, is simpler, quicker than the removal of oldputty from conventional sash constructions having the glazing compoundapplied in a bead on the face of the frame. In the event that any of thestops 26 of the four frame sides 12 should be accidentally damaged inremoval to such an extent as to prevent their reuse, it is, of course,possible to reglaze the replaced window glass by conventional methodsemploying an exposed surface bead of glazing compound.

Changes may be made in the construction and arrangement of the parts ofmy sash and reglazing method therefore without departing from the realspirit and purpose of my invention, and it is my intention to cover bymy claims any modified forms of structure or use of mechanicalimprovements which may be reasonably included within their scope.

I claim as my invention:

1. In a window sash construction, a non-metallic F frame formed of anumber of pieces adapted to be assembled and defining a window openingtherethrough, said frame having a rabbet formed substantially completelyabout its inner periphery and extending in depth in a plane parallel tothat of said frame, a pane of window material disposed in said rabbetwhen the frame is initially assembled, said frame having an elongatedshallow groove formed closely adjacent the inner peripheral edge thereofsubstantially in line with the bottom of the rabbet and extendingsubstantially completely about the periphery of the frame, said grooveextending in depth in a plane substantially perpendicular to that ofsaid rabbet and terminating a substantial distance short of intersectiontherewith for defining an initially integral stop means capable of beingsubsequently severed to afford removal of said initially disposed windowmaterial, the integral frame thickness between said groove and saidrabbet being at least twice the depth of said groove so as to providesubstantial material strength for retaining said pane of window materialwithin said frame.

2. A method of initial window construction and subsequent reglazingcomprising the construction steps of first assembling a non-metallicframe from a number of pieces adapted to be interconnected to define awindow opening, forming each of said frame pieces prior to assembly soas to provide a rabbet along an edge thereof whereby the assembled frameprovides a rabbet extending substantially completely about its innerperiphery and extending in depth in a plane parallel to that of saidframe, positioning a pane of window material in said rabbet when theframe is assembled to provide a unitary window, forming each of saidframe pieces prior to assembly so as to provide an elongated shallowgroove along a face thereof closely adjacent said inner peripheral edgeand substantially in line with the bottom of the rabbet whereby theassembled frame provides a groove extending substantially completelyabout the periphery of the frame, forming the groove of said framepieces so as to extend in depth in a plane substantially perpendicularto that of said rabbet and terminating a substantial distance short ofintersection therewith for defining an initial integral stop meanscapable of being subsequently severed to afford removal of saidinitially positioned pane of window material, and predetermining theintegral frame thickness between said groove and said rabbet so as to beat least twice the, depth of said groove to provide substantial materialstrength for retaining said pane of window material within said frameafter initial assembly, and the reglazing steps of first cutting saidintegral stop means from said assembled frame by deepening said grooveto effect intersection with said rabbet, next removing the stop meansseparated from the frame by the intersecting rabbet and groove, nextreplacing the former pane of window material with a new pane of windowmaterial, next returning the severed stop means to substantially itssame original position as before removal along the complementary linesof separation previously formed during the cutting step, and thenfixedly securing said stop means to said frame to complete thereglazing.

References Cited in the file of this patent UNITED STATES PATENTS1,686,162 Lindersmith Oct. 2, 1928 1,720,841 Jones July 16, 19291,757,706 Dennis May 6, 1930 2,110,728 Hoggatt Mar. 8, 1938 2,116,584Shelby May 10, 1938 2,309,067 Hebestreit Jan. 19, 1943

